Invention Grant
- Patent Title: Powder press for the manufacture of a metal powder compact
- Patent Title (中): 粉末压制机用于制造金属粉末压块
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Application No.: US12922871Application Date: 2009-03-12
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Publication No.: US08523550B2Publication Date: 2013-09-03
- Inventor: Alex Wehrli , Daniel Meier , Beat Straub
- Applicant: Alex Wehrli , Daniel Meier , Beat Straub
- Applicant Address: CH Lyss
- Assignee: Osterwalder AG
- Current Assignee: Osterwalder AG
- Current Assignee Address: CH Lyss
- Agency: Pearne & Gordon LLP
- Priority: EP08152858 20080317
- International Application: PCT/EP2009/052905 WO 20090312
- International Announcement: WO2009/115444 WO 20090924
- Main IPC: B29C43/42
- IPC: B29C43/42

Abstract:
A powder press for producing a metal powder compact comprises an upper punch arrangement and a lower punch arrangement (1) which accommodates the die arrangement (3) which forms the mold cavity (8) into which the metal powder is filled, whereupon the pressing process is carried out. The lower punch arrangement (1) is equipped with a plate (2) on which the die arrangement (3) is placed and to which plate (2) cross pressing devices (4) are fastened. Each cross pressing device (4) is equipped with a cross pressing punch (5) that can be linearly driven by a drive unit and that can be pressed into and retracted out of the mold cavity (8) in the cross pressing direction through an opening (6) in the die (7) which is essentially perpendicular to the pressing direction. The drive unit of each cross pressing device (4) comprises a linear drive unit with a fixed part fastened to the frame (18) of the cross pressing device (4) and a part which is linearly moveable relative to the fixed part, said linearly moveable part being connected to a first wedge (19) whose wedge surface (22) acts on the wedge surface (23) of a second wedge (24) that can be moved essentially perpendicularly to the first wedge (19) in the direction of cross pressing. This allows compacts to be produced which exhibit lateral holes, side impressions or side impressions and protrusions applied during the pressing process, whereby the forces produced in the cross pressing direction can be optimally absorbed.
Public/Granted literature
- US20110027400A1 POWDER PRESS FOR THE MANUFACTURE OF A METAL POWDER COMPACT Public/Granted day:2011-02-03
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